Cap for friction-top cans.



J. G. uoncsom.

CAP FOR FRICTION TOP CANS. APPLICATION FILED 05c. 13, 1913.

1,200,354; Patented Oct. 3,1916.

, J 1wenz2r: Jaluz 6'. Hagan UNITED STATES PATENT or rion.

JOHN G. HODGSON, F MAYWOOD, ILLINOIS, ASSIGNOR TO AMERICAN CAN COMPANY,

' OF NEW YORK, N. Y., CORPORATION OF NEW JERSEY.

oer ron FRICTION-TO? onus.

Spe'cification of Letters Patent.

Patented Oct. s, 1916,.

Application filed-December 13, 1913. Serial No. 806,355.

To all whom it may concern Be it known that 1, JOHN G. Honoson, a citizen of the United States, residing in Maywood, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Caps for Friction 'lop inclosed substances Cans, of which the following is a specification.

This invention relates to improvements in caps for friction top cans.

The object of a cap for combined hermetically and frictionally sealed food containing cans, the cap having a peripheral gasket or hem composed of a compressible and elastic mate rial.

Friction top cans have been known in the art for many years andthe same have generally been used for inclosing-substances which are notseriously afie'cted by small admissions of air to the interior of the cans, the friction seal being one which is not an absolutely hermetic seal. The substances most commonly packed in friction top cans are ordinary paints, powdered or eomininuted substances and a few kinds of food products. Hitherto, in inclosing most food products and the'higlier grades of paints and varnishes which are more or less affected by continued exposure to air, it has been the practice to inclose such substances either in soldered top cans or what are commonly termed sanitary or double seamed cans. There has been a longfelt need for a can the friction-top can and in which could be that must be perfectly and absolutely protected from contact with theatmosphere; or, fectly hermetically sealed can haying a friction cover or top. 'I have devised such a can and the same includes in addition to the usual friction top, a cap having a compressible and elastic gasket which is held firmly seated on a coiiperating supporting ledge of the can top by means of the friction cover. i

In the drawing such a can as I have described is illustrated, Figure 1 thereof being a vertical sectional view andiFig. 2 be ing an enlarged sectional view of the improved cap employed in connection therewith. 4

In said drawing, nated by the reference the can body is desig- 10, thesame having the invention is to provide varnishes,

having the advantages of in other words, a pera bottom 11 soldered or otherwise secured thereto and provided also with a top 12. The top 12 is provided seat walls 13 and 14, an annular, upwardly extended bead 15 at the top of the friction as'shown, comprises a circular sheet metal member 22 having a countersunk central portion 23, and downwardly inclined peripheral edge 24, the latter having secured thereto an annular, compres sible: and elastic gasket 25 of substantially U-shape in cross-section, whichjgasket or here may be made of rubber, rubber conik with two spaced, T substantially verticallyextending friction those of the can-top in the usual manner". The inn proved cap,

pound, ibrous material or other suitable;

substance adapted to be easily compressed. and to accommodate itself to any larities or crevices in the member'f against which it is pressed. As shown in Fig. 1 of the drawing, the cap 22' is placed over the opening in the can top with the gasket or hem thereof resting on the upwardly;' inclined shelf 16. The friction cover, whenforced home, will engage the top portion of the cap and press it firmly into engagement with the can top, thereby providing an hermetic seal for the can in addition to the two 5 irregufriction seals formed between the two sets of coiiperating-friction seat walls.

From the preceding description it will be seen that. the can is adapted to contain all kinds of substances which must be protected from the atmosphere an at the same time the can has all the characteristics and ad- Y vantages of the ordinary frictionltop can. The can which I have provided is suitable for containing the highest gradesof ice paints and varnishes and the 'seal formed is such as to absolutely prevent any skin forming on the top thereof which has" hitherto been found to occur when such materials have-been shipped in the ordinary friction top cans. My improved can is also adapted for use in preserving food products of all de-- scriptions, both in factory canning and household canning, the construction being dowiiwardl such that the rap and cover may be applied without the use of any complicated inarhinei'y.

I am aware that caps for soldered cans hare hitherto been made which have been provided with a hem of common solder or other fusible metal, but such caps are not within the purview of my inyention inasmuch as they do not have a gasket which is compressible or elastic nor one in which the seal is adapted to be affected merely by means ofpressure between two parts. The solder hem caps to which I refer, are ,inerely designed for applying the solder in a coni'enient manner to the point where needed, the solder being melt'ed and fused after the can cap has l. en applied to the stud hole of the soldered can, which does away with the necessity of applying the solder after the cups have been put in place.

hat I do claim, however, is:

l. Aifrictionall can, comprising top of which is formed wi presented gasket-engaging with an outwardly presented friction wall atthe outer side of the said shoulder; a cap comprising a sheet metal body having an outwardly presented gasket-engaging part, said cap being adapted to seat loosely on the can top; a gasket between the said inwardly presented shoulder sented cap part; and a cover having an inwardly presented friction wall adapted to press firmly against the said outwardly preseiitcd friction wall of the can top to'force said shoulder toward the gasket when said cover is applied.

A frictionally and hermetically sealed can, comprising in combination; a can the top of which is formed with an outwardly tli an inwardly shoulder and and downwardly inclined cap-supporting,

ledge; a cap comprising a sheet metal body formed with a downwardly and outwardly inclined sheet metal rim and formed at the upper end of said downwarlly and outwardly inclined sheet metal rim with a stiffened cover-engaging bead; said cap being provided with a gasket attached to said y and outwardly inclined sheet metal rim and adaptedto rest loosely on said outwardly and downwardly inclined cap-supporting ledge; and a inwardly presented cap-engaging surface adapted to engage said stitfened cover-engaging head of the said cap to press the gasket firmly against the cap-supporting ledge when the cover is applied; and friction walls securing said cover to-the can top.

A frictionally and hermetically sealed can, comprising in combination: a can the top of which is formed with an inclined flange-portion around an open mouth, and with a friction wall at the outer side of the said inclined flange portion; a cap comprisy and hermetically sealed in combination: a can the and said outwardly precover having an ing a sheet metal body' formed with a down wardly and ()llt\\':l1'(ll inclined sheet metal riiii flange and l of the same; wardly inclined sheet the cap being adapted ange-portion 'of said gasket interposed; and a iai'ing a gasket at the edge said downwardly and outmetal rim flange of to seat looselyon said can top with said cover having an inwardly presented friction wall adapted to press firmly against sented. friction gasket-supporting the said outwardly prewall of the can top to force parts of the can topitoward the gasket andcap when saidcover is applied.

4. A frictionally and hermetically sealed having a gasket at the edge of the same; said .wardly inclined slice the cap being adapted flange-portion of said having an inwardly th an inwardly unge-portion and outwardly pr seated friction wall e said inclined flangep comprising a sheet metal prising in combination: a can the 1 top of which 1S formed wi and downwardly inclined ll downwardly and outmetal rim flange and outwardly presented downwardly and outis metal rim flangeof,

to seat loosely on said can top; and a cover presented friction well adapted to press firmly against the said out:

.wardl y presented top to force gasket-su cantop toward the y when said cover is ap In a frictional sealed can,,in combina friction wall of the can pporting parts of the gasket and cap-edge plied.

ly and tion: a on hermetically p adapted to effect a hermetic seal, and comprising a sheet I metal body formed with a downwardly and outii'ardly inclined sheet meta a gasket of compressible and rial attached to the] in with an outwardly wall on which the an outwardly prese outer side of the said cover formed to press Hlil and gasket, and having ed friction wall which 1 rim flange; elastic matcnder side of said run tlang; a can the top of which is formed u i and downwai dly inclined l gasket litsyand with uted friction wall at the inclined wall; and a down on the said cap an inwardly present presses the outwardly presented friction wall'of the can top and the gasket supporting parts toward the 6. In a ffrictional sealed can,

of com ly and hermetically i i combination: a cap adapted to effect a hermetic seal sheet metal body formed and comprising a niaterialattaclied to the under side and to the edge of the said rim flange, a canthe top of which is formed with a downwardly inclined under side of the said n outwardly and a wall on which the! gasket fits, and with rim iio

I with a downwardly 1 inclined sheet metal pressihle and elastic" an upwardly and outwardly inclined wall against the base ofiw hich the edge portion of the gasket fits,xand with an outwa rdl y presented friction wallet the outer side of the said upwardly and-outwardly inclined wall; and a cover formed to press down on the said cap and gasket, and having an inward] y presented friction wall which presses the outwardly presented friction wall-0f the can tep, and the said upwardly and outwardly inclined wall of the same, to vard the edge of the gasket. Signed this 9th day of December, 1913, in the presence of two Witnesses.

. JOHN G. HODGSON.

Witnesses: i

' JOSEPH Hnmus,

WILLIAM A. GEIGER. 

